IT1258314B - Procedimento e dispositivo per determinare lo stato di invecchiamento di un catalizzatore - Google Patents

Procedimento e dispositivo per determinare lo stato di invecchiamento di un catalizzatore

Info

Publication number
IT1258314B
IT1258314B ITMI920882A ITMI920882A IT1258314B IT 1258314 B IT1258314 B IT 1258314B IT MI920882 A ITMI920882 A IT MI920882A IT MI920882 A ITMI920882 A IT MI920882A IT 1258314 B IT1258314 B IT 1258314B
Authority
IT
Italy
Prior art keywords
catalyst
state
aging state
aging
fact
Prior art date
Application number
ITMI920882A
Other languages
English (en)
Inventor
Eberhard Schnaibel
Original Assignee
Bosch Gmbh Robert
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of ITMI920882A0 publication Critical patent/ITMI920882A0/it
Publication of ITMI920882A1 publication Critical patent/ITMI920882A1/it
Application granted granted Critical
Publication of IT1258314B publication Critical patent/IT1258314B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)

Abstract

Un procedimento per determinare lo stato d'invecchiamento di un catalizzatore è disposto nella corrente del gas di scarico di un motore endotermico e che viene fatto funzionare con una regolazione lambda con comportamento a due punti e fornisce valutazioni con l'ausilio di una grandezza dello stato d'invecchiamento, per il fatto che vengono messi reciprocamente in relazione un segnale misurato ed un segnale di prova, laddove il segnale misurato viene rilevato da una sonda lambda disposta a monte del catalizzatore mentre il segnale di. prova viene rilevato da una sonda lambda disposta a valle del catalizzatore, e caratterizzato dal fatto che per ridurre l'influenza di differenti stati d'esercizio sulla grandezza dello stato d'invecchiamento vengono rilevati di volta in volta valori attuali di grandezze dello stato d'esercizio influenzanti processi d'immagazzinamento dell'ossigeno nel catalizzatore, e la grandezza dello stato d'invecchiamento viene corretta sulla base di questi valori.Per il fatto che la grandezza dello stato d'invecchiamento viene corretta nella modalità menzionata, essa può essere determinata in maniera affidabile per molti differenti stati d'esercizio e non soltanto per pochi scelti stati d'esercizio.
ITMI920882A 1991-04-17 1992-04-10 Procedimento e dispositivo per determinare lo stato di invecchiamento di un catalizzatore IT1258314B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4112479A DE4112479C2 (de) 1991-04-17 1991-04-17 Verfahren und Vorrichtung zum Bestimmen des Alterungszustandes eines Katalysators

Publications (3)

Publication Number Publication Date
ITMI920882A0 ITMI920882A0 (it) 1992-04-10
ITMI920882A1 ITMI920882A1 (it) 1993-10-10
IT1258314B true IT1258314B (it) 1996-02-22

Family

ID=6429747

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI920882A IT1258314B (it) 1991-04-17 1992-04-10 Procedimento e dispositivo per determinare lo stato di invecchiamento di un catalizzatore

Country Status (4)

Country Link
US (1) US5303580A (it)
JP (1) JP3313135B2 (it)
DE (1) DE4112479C2 (it)
IT (1) IT1258314B (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA928141B (en) * 1991-10-23 1993-04-29 Transcom Gas Tech Gas delivery system.
JP2626433B2 (ja) * 1992-12-09 1997-07-02 トヨタ自動車株式会社 触媒劣化検出装置
US5519992A (en) * 1993-03-16 1996-05-28 Mitsubishi Denki Kabushiki Kaisha Exhaust gas purification system for internal combustion engine, and apparatus and method for controlling the same
JP3157061B2 (ja) * 1993-04-26 2001-04-16 株式会社日立製作所 触媒劣化診断システム
WO1996028646A1 (en) * 1995-03-16 1996-09-19 Hyundai Motor Company Apparatus and method for judging deterioration of catalysts device and oxygen content sensing device
JP3284844B2 (ja) * 1995-09-20 2002-05-20 トヨタ自動車株式会社 触媒劣化検出装置
US5706652A (en) * 1996-04-22 1998-01-13 General Motors Corporation Catalytic converter monitor method and apparatus
JPH1068346A (ja) * 1996-06-21 1998-03-10 Ngk Insulators Ltd エンジン排ガス系の制御法
KR100474818B1 (ko) * 1997-02-19 2005-05-16 삼성전기주식회사 촉매변환기의열화감지장치
DE19819204C1 (de) 1998-04-29 1999-09-30 Siemens Ag Verfahren zur Abgasreinigung mit Trimmregelung
US6244046B1 (en) * 1998-07-17 2001-06-12 Denso Corporation Engine exhaust purification system and method having NOx occluding and reducing catalyst
DE10048826B4 (de) * 2000-09-29 2012-03-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Erfassung alterungsbedingter Veränderungen von technischen Systemen wie Elektromotoren
DE10248842A1 (de) 2002-10-19 2004-04-29 Daimlerchrysler Ag Vorrichtung und Verfahren zur Bestimmung des Alterungszustands eines Abgaskatalysators
DE102005002237A1 (de) * 2005-01-18 2006-07-20 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens
US8065871B1 (en) 2007-01-02 2011-11-29 Cummins Ip, Inc Apparatus, system, and method for real-time diagnosis of a NOx-adsorption catalyst
US8756922B2 (en) 2011-06-10 2014-06-24 Cummins Ip, Inc. NOx adsorber catalyst condition evaluation apparatus and associated methods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007589A (en) * 1973-01-31 1977-02-15 Robert Bosch G.M.B.H. Internal combustion exhaust catalytic reactor monitoring system
DE2304622A1 (de) * 1973-01-31 1974-08-15 Bosch Gmbh Robert Einrichtung zur ueberwachung von katalytischen reaktoren in abgasentgiftungsanlagen von brennkraftmaschinen
DE2444334A1 (de) * 1974-09-17 1976-03-25 Bosch Gmbh Robert Verfahren und einrichtung zur ueberwachung der aktivitaet von katalytischen reaktoren
CH668620A5 (de) * 1984-04-12 1989-01-13 Daimler Benz Ag Verfahren zur ueberpruefung und justierung von katalytischen abgasreinigungsanlagen von verbrennungsmotoren.
DE3500594C2 (de) * 1985-01-10 1995-08-17 Bosch Gmbh Robert Zumeßsystem für eine Brennkraftmaschine zur Beeinflussung des Betriebsgemisches
US5154055A (en) * 1990-01-22 1992-10-13 Nippondenso Co., Ltd. Apparatus for detecting purification factor of catalyst
US5159810A (en) * 1991-08-26 1992-11-03 Ford Motor Company Catalytic converter monitoring using downstream oxygen sensor

Also Published As

Publication number Publication date
ITMI920882A1 (it) 1993-10-10
ITMI920882A0 (it) 1992-04-10
JP3313135B2 (ja) 2002-08-12
DE4112479A1 (de) 1992-10-22
JPH05179934A (ja) 1993-07-20
US5303580A (en) 1994-04-19
DE4112479C2 (de) 2002-06-06

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970428